Utilization of municipal solid waste (MSW) directly as a fuel has many obstacles, both technical and non-technical. Kendala teknis di antaranya adalah kandungan air yang tinggi, densitas energi yang rendah serta komponen yang heterogen dan bentuk yang beragam. Technical constraints include the high water content, low energy density and the components that a heterogeneous and diverse forms. Sedangkan kendala non-teknis adalah berupa bau busuk dan potensi sumber bibit penyakit.While non-technical constraints are a bad smell and the potential source of germs. Various constraints caused improper waste used as fuel. Conversely, if the waste management applied the right technology it will get two benefits at once, i.e., reduced significantly the amount of MSW and alternative fuel produced from garbage.

The objectives of this study to get the kind of waste components which can be improved fuel quality through the torrefaction process and get torrefaction temperature and residence time to produce maximum heating value.

Study on municipal solid waste in city of Bandung, Indonesia, shows that the largest mass fraction of MSW is organic component, which is 42%. The results are also informed that the mass fraction of MSW that can be used as fuel reaches 75%, after which 25% utilized by scavengers. This indicates that if in the waste management applied the right technology it will get two benefits at once, ie, reduced significantly the amount of waste and produced fuel from waste. Theoretically, the heat power generated from MSW in Bandung can reach 91.5 MW.

Temperature variation is same for all specimens, i.e. 250 and 300°C. While residence time, the first variation is the same for all specimens, which is 60 minutes, and the second variation is the length of time required to start the asymptotic mass loss.